[He swoops his handkerchief and coughs properly into it, cupping it to mask the unnatural spray of blood. He sucks in another painful breath, but feels the tightness in his chest vanish once more -- or lessen, at least, which is just fine by him!!]

It's normal, I assure you, my good man!

[NORMAL HE SAYS, COUGHING BLOOD.]

... That is, I... had been injured in an accident, but it's under control.

It's just an unfortunate side effect.

[Y'know. Coughing blood.]